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Create an alternative blockstore for use with the filestore.
Restore blockstore, write_cache to original unmodified versions. License: MIT Signed-off-by: Kevin Atkinson <k@kevina.org>
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,80 @@ | ||
| // package blockstore implements a thin wrapper over a datastore, giving a | ||
| // clean interface for Getting and Putting block objects. | ||
| package filestore_support | ||
|
|
||
| import ( | ||
| ds "github.com/ipfs/go-ipfs/Godeps/_workspace/src/github.com/ipfs/go-datastore" | ||
| dsns "github.com/ipfs/go-ipfs/Godeps/_workspace/src/github.com/ipfs/go-datastore/namespace" | ||
| blocks "github.com/ipfs/go-ipfs/blocks" | ||
| bs "github.com/ipfs/go-ipfs/blocks/blockstore" | ||
| fs "github.com/ipfs/go-ipfs/filestore" | ||
| ) | ||
|
|
||
| type blockstore struct { | ||
| bs.GCBlockstore | ||
| //filestore fs.Datastore | ||
| datastore ds.Batching | ||
| } | ||
|
|
||
| func NewBlockstore(b bs.GCBlockstore, d ds.Batching) bs.GCBlockstore { | ||
| return &blockstore{b, dsns.Wrap(d, bs.BlockPrefix)} | ||
| } | ||
|
|
||
| func (bs *blockstore) Put(block blocks.Block) error { | ||
| k := block.Key().DsKey() | ||
| println("putting...") | ||
|
|
||
| data := bs.prepareBlock(k, block) | ||
| if data == nil { | ||
| return nil | ||
| } | ||
| return bs.datastore.Put(k, data) | ||
| } | ||
|
|
||
| func (bs *blockstore) PutMany(blocks []blocks.Block) error { | ||
| println("put many...") | ||
| t, err := bs.datastore.Batch() | ||
| if err != nil { | ||
| return err | ||
| } | ||
| for _, b := range blocks { | ||
| k := b.Key().DsKey() | ||
| data := bs.prepareBlock(k, b) | ||
| if data == nil { | ||
| continue | ||
| } | ||
| err = t.Put(k, data) | ||
| if err != nil { | ||
| return err | ||
| } | ||
| } | ||
| return t.Commit() | ||
| } | ||
|
|
||
| func (bs *blockstore) prepareBlock(k ds.Key, block blocks.Block) interface{} { | ||
| if fsBlock, ok := block.(*blocks.FilestoreBlock); !ok { | ||
| // Has is cheaper than Put, so see if we already have it | ||
| exists, err := bs.datastore.Has(k) | ||
| if err == nil && exists { | ||
| return nil // already stored. | ||
| } | ||
| return block.Data() | ||
| } else { | ||
| println("DataObj") | ||
| d := &fs.DataObj{ | ||
| FilePath: fsBlock.FilePath, | ||
| Offset: fsBlock.Offset, | ||
| Size: fsBlock.Size, | ||
| ModTime: fs.FromTime(fsBlock.ModTime), | ||
| } | ||
| if fsBlock.AltData == nil { | ||
| d.Flags |= fs.WholeFile | fs.FileRoot | ||
| d.Data = block.Data() | ||
| } else { | ||
| d.Flags |= fs.NoBlockData | ||
| d.Data = fsBlock.AltData | ||
| } | ||
| return &fs.DataWOpts{d, fsBlock.AddOpts} | ||
| } | ||
|
|
||
| } |